ssl_sess.c revision 284295
1178476Sjb/* ssl/ssl_sess.c */ 2178476Sjb/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3178476Sjb * All rights reserved. 4178476Sjb * 5178476Sjb * This package is an SSL implementation written 6178476Sjb * by Eric Young (eay@cryptsoft.com). 7178476Sjb * The implementation was written so as to conform with Netscapes SSL. 8178476Sjb * 9178476Sjb * This library is free for commercial and non-commercial use as long as 10178476Sjb * the following conditions are aheared to. The following conditions 11178476Sjb * apply to all code found in this distribution, be it the RC4, RSA, 12178476Sjb * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13178476Sjb * included with this distribution is covered by the same copyright terms 14178476Sjb * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15178476Sjb * 16178476Sjb * Copyright remains Eric Young's, and as such any Copyright notices in 17178476Sjb * the code are not to be removed. 18178476Sjb * If this package is used in a product, Eric Young should be given attribution 19178476Sjb * as the author of the parts of the library used. 20178476Sjb * This can be in the form of a textual message at program startup or 21178476Sjb * in documentation (online or textual) provided with the package. 22178476Sjb * 23178476Sjb * Redistribution and use in source and binary forms, with or without 24178476Sjb * modification, are permitted provided that the following conditions 25178476Sjb * are met: 26178476Sjb * 1. Redistributions of source code must retain the copyright 27178476Sjb * notice, this list of conditions and the following disclaimer. 28178476Sjb * 2. Redistributions in binary form must reproduce the above copyright 29178476Sjb * notice, this list of conditions and the following disclaimer in the 30178476Sjb * documentation and/or other materials provided with the distribution. 31178476Sjb * 3. All advertising materials mentioning features or use of this software 32178476Sjb * must display the following acknowledgement: 33178476Sjb * "This product includes cryptographic software written by 34178476Sjb * Eric Young (eay@cryptsoft.com)" 35178476Sjb * The word 'cryptographic' can be left out if the rouines from the library 36178476Sjb * being used are not cryptographic related :-). 37178476Sjb * 4. If you include any Windows specific code (or a derivative thereof) from 38178476Sjb * the apps directory (application code) you must include an acknowledgement: 39178476Sjb * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40178476Sjb * 41178476Sjb * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42178476Sjb * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43178476Sjb * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44178476Sjb * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45178476Sjb * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46178476Sjb * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47178476Sjb * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48178476Sjb * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49178476Sjb * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50178476Sjb * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51178476Sjb * SUCH DAMAGE. 52 * 53 * The licence and distribution terms for any publically available version or 54 * derivative of this code cannot be changed. i.e. this code cannot simply be 55 * copied and put under another distribution licence 56 * [including the GNU Public Licence.] 57 */ 58/* ==================================================================== 59 * Copyright (c) 1998-2006 The OpenSSL Project. All rights reserved. 60 * 61 * Redistribution and use in source and binary forms, with or without 62 * modification, are permitted provided that the following conditions 63 * are met: 64 * 65 * 1. Redistributions of source code must retain the above copyright 66 * notice, this list of conditions and the following disclaimer. 67 * 68 * 2. Redistributions in binary form must reproduce the above copyright 69 * notice, this list of conditions and the following disclaimer in 70 * the documentation and/or other materials provided with the 71 * distribution. 72 * 73 * 3. All advertising materials mentioning features or use of this 74 * software must display the following acknowledgment: 75 * "This product includes software developed by the OpenSSL Project 76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" 77 * 78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 79 * endorse or promote products derived from this software without 80 * prior written permission. For written permission, please contact 81 * openssl-core@openssl.org. 82 * 83 * 5. Products derived from this software may not be called "OpenSSL" 84 * nor may "OpenSSL" appear in their names without prior written 85 * permission of the OpenSSL Project. 86 * 87 * 6. Redistributions of any form whatsoever must retain the following 88 * acknowledgment: 89 * "This product includes software developed by the OpenSSL Project 90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)" 91 * 92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 103 * OF THE POSSIBILITY OF SUCH DAMAGE. 104 * ==================================================================== 105 * 106 * This product includes cryptographic software written by Eric Young 107 * (eay@cryptsoft.com). This product includes software written by Tim 108 * Hudson (tjh@cryptsoft.com). 109 * 110 */ 111/* ==================================================================== 112 * Copyright 2005 Nokia. All rights reserved. 113 * 114 * The portions of the attached software ("Contribution") is developed by 115 * Nokia Corporation and is licensed pursuant to the OpenSSL open source 116 * license. 117 * 118 * The Contribution, originally written by Mika Kousa and Pasi Eronen of 119 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites 120 * support (see RFC 4279) to OpenSSL. 121 * 122 * No patent licenses or other rights except those expressly stated in 123 * the OpenSSL open source license shall be deemed granted or received 124 * expressly, by implication, estoppel, or otherwise. 125 * 126 * No assurances are provided by Nokia that the Contribution does not 127 * infringe the patent or other intellectual property rights of any third 128 * party or that the license provides you with all the necessary rights 129 * to make use of the Contribution. 130 * 131 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN 132 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA 133 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY 134 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR 135 * OTHERWISE. 136 */ 137 138#include <stdio.h> 139#include <openssl/lhash.h> 140#include <openssl/rand.h> 141#ifndef OPENSSL_NO_ENGINE 142#include <openssl/engine.h> 143#endif 144#include "ssl_locl.h" 145 146static void SSL_SESSION_list_remove(SSL_CTX *ctx, SSL_SESSION *s); 147static void SSL_SESSION_list_add(SSL_CTX *ctx,SSL_SESSION *s); 148static int remove_session_lock(SSL_CTX *ctx, SSL_SESSION *c, int lck); 149 150SSL_SESSION *SSL_get_session(const SSL *ssl) 151/* aka SSL_get0_session; gets 0 objects, just returns a copy of the pointer */ 152 { 153 return(ssl->session); 154 } 155 156SSL_SESSION *SSL_get1_session(SSL *ssl) 157/* variant of SSL_get_session: caller really gets something */ 158 { 159 SSL_SESSION *sess; 160 /* Need to lock this all up rather than just use CRYPTO_add so that 161 * somebody doesn't free ssl->session between when we check it's 162 * non-null and when we up the reference count. */ 163 CRYPTO_w_lock(CRYPTO_LOCK_SSL_SESSION); 164 sess = ssl->session; 165 if(sess) 166 sess->references++; 167 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_SESSION); 168 return(sess); 169 } 170 171int SSL_SESSION_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 172 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 173 { 174 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_SESSION, argl, argp, 175 new_func, dup_func, free_func); 176 } 177 178int SSL_SESSION_set_ex_data(SSL_SESSION *s, int idx, void *arg) 179 { 180 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg)); 181 } 182 183void *SSL_SESSION_get_ex_data(const SSL_SESSION *s, int idx) 184 { 185 return(CRYPTO_get_ex_data(&s->ex_data,idx)); 186 } 187 188SSL_SESSION *SSL_SESSION_new(void) 189 { 190 SSL_SESSION *ss; 191 192 ss=(SSL_SESSION *)OPENSSL_malloc(sizeof(SSL_SESSION)); 193 if (ss == NULL) 194 { 195 SSLerr(SSL_F_SSL_SESSION_NEW,ERR_R_MALLOC_FAILURE); 196 return(0); 197 } 198 memset(ss,0,sizeof(SSL_SESSION)); 199 200 ss->verify_result = 1; /* avoid 0 (= X509_V_OK) just in case */ 201 ss->references=1; 202 ss->timeout=60*5+4; /* 5 minute timeout by default */ 203 ss->time=(unsigned long)time(NULL); 204 ss->prev=NULL; 205 ss->next=NULL; 206 ss->compress_meth=0; 207#ifndef OPENSSL_NO_TLSEXT 208 ss->tlsext_hostname = NULL; 209#ifndef OPENSSL_NO_EC 210 ss->tlsext_ecpointformatlist_length = 0; 211 ss->tlsext_ecpointformatlist = NULL; 212 ss->tlsext_ellipticcurvelist_length = 0; 213 ss->tlsext_ellipticcurvelist = NULL; 214#endif 215#endif 216 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_SESSION, ss, &ss->ex_data); 217#ifndef OPENSSL_NO_PSK 218 ss->psk_identity_hint=NULL; 219 ss->psk_identity=NULL; 220#endif 221#ifndef OPENSSL_NO_SRP 222 ss->srp_username=NULL; 223#endif 224 return(ss); 225 } 226 227/* 228 * Create a new SSL_SESSION and duplicate the contents of |src| into it. If 229 * ticket == 0 then no ticket information is duplicated, otherwise it is. 230 */ 231SSL_SESSION *ssl_session_dup(SSL_SESSION *src, int ticket) 232{ 233 SSL_SESSION *dest; 234 235 dest = OPENSSL_malloc(sizeof(*src)); 236 if (dest == NULL) { 237 goto err; 238 } 239 memcpy(dest, src, sizeof(*dest)); 240 241 /* 242 * Set the various pointers to NULL so that we can call SSL_SESSION_free in 243 * the case of an error whilst halfway through constructing dest 244 */ 245#ifndef OPENSSL_NO_PSK 246 dest->psk_identity_hint = NULL; 247 dest->psk_identity = NULL; 248#endif 249 dest->ciphers = NULL; 250#ifndef OPENSSL_NO_TLSEXT 251 dest->tlsext_hostname = NULL; 252# ifndef OPENSSL_NO_EC 253 dest->tlsext_ecpointformatlist = NULL; 254 dest->tlsext_ellipticcurvelist = NULL; 255# endif 256#endif 257 dest->tlsext_tick = NULL; 258#ifndef OPENSSL_NO_SRP 259 dest->srp_username = NULL; 260#endif 261 memset(&dest->ex_data, 0, sizeof(dest->ex_data)); 262 263 /* We deliberately don't copy the prev and next pointers */ 264 dest->prev = NULL; 265 dest->next = NULL; 266 267 dest->references = 1; 268 269 if (src->sess_cert != NULL) 270 CRYPTO_add(&src->sess_cert->references, 1, CRYPTO_LOCK_SSL_SESS_CERT); 271 272 if (src->peer != NULL) 273 CRYPTO_add(&src->peer->references, 1, CRYPTO_LOCK_X509); 274 275#ifndef OPENSSL_NO_PSK 276 if (src->psk_identity_hint) { 277 dest->psk_identity_hint = BUF_strdup(src->psk_identity_hint); 278 if (dest->psk_identity_hint == NULL) { 279 goto err; 280 } 281 } 282 if (src->psk_identity) { 283 dest->psk_identity = BUF_strdup(src->psk_identity); 284 if (dest->psk_identity == NULL) { 285 goto err; 286 } 287 } 288#endif 289 290 if(src->ciphers != NULL) { 291 dest->ciphers = sk_SSL_CIPHER_dup(src->ciphers); 292 if (dest->ciphers == NULL) 293 goto err; 294 } 295 296 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL_SESSION, 297 &dest->ex_data, &src->ex_data)) { 298 goto err; 299 } 300 301#ifndef OPENSSL_NO_TLSEXT 302 if (src->tlsext_hostname) { 303 dest->tlsext_hostname = BUF_strdup(src->tlsext_hostname); 304 if (dest->tlsext_hostname == NULL) { 305 goto err; 306 } 307 } 308# ifndef OPENSSL_NO_EC 309 if (src->tlsext_ecpointformatlist) { 310 dest->tlsext_ecpointformatlist = 311 BUF_memdup(src->tlsext_ecpointformatlist, 312 src->tlsext_ecpointformatlist_length); 313 if (dest->tlsext_ecpointformatlist == NULL) 314 goto err; 315 } 316 if (src->tlsext_ellipticcurvelist) { 317 dest->tlsext_ellipticcurvelist = 318 BUF_memdup(src->tlsext_ellipticcurvelist, 319 src->tlsext_ellipticcurvelist_length); 320 if (dest->tlsext_ellipticcurvelist == NULL) 321 goto err; 322 } 323# endif 324#endif 325 326 if (ticket != 0) { 327 dest->tlsext_tick = BUF_memdup(src->tlsext_tick, src->tlsext_ticklen); 328 if(dest->tlsext_tick == NULL) 329 goto err; 330 } else { 331 dest->tlsext_tick_lifetime_hint = 0; 332 dest->tlsext_ticklen = 0; 333 } 334 335#ifndef OPENSSL_NO_SRP 336 if (src->srp_username) { 337 dest->srp_username = BUF_strdup(src->srp_username); 338 if (dest->srp_username == NULL) { 339 goto err; 340 } 341 } 342#endif 343 344 return dest; 345err: 346 SSLerr(SSL_F_SSL_SESSION_DUP, ERR_R_MALLOC_FAILURE); 347 SSL_SESSION_free(dest); 348 return NULL; 349} 350 351const unsigned char *SSL_SESSION_get_id(const SSL_SESSION *s, unsigned int *len) 352 { 353 if(len) 354 *len = s->session_id_length; 355 return s->session_id; 356 } 357 358unsigned int SSL_SESSION_get_compress_id(const SSL_SESSION *s) 359 { 360 return s->compress_meth; 361 } 362 363/* Even with SSLv2, we have 16 bytes (128 bits) of session ID space. SSLv3/TLSv1 364 * has 32 bytes (256 bits). As such, filling the ID with random gunk repeatedly 365 * until we have no conflict is going to complete in one iteration pretty much 366 * "most" of the time (btw: understatement). So, if it takes us 10 iterations 367 * and we still can't avoid a conflict - well that's a reasonable point to call 368 * it quits. Either the RAND code is broken or someone is trying to open roughly 369 * very close to 2^128 (or 2^256) SSL sessions to our server. How you might 370 * store that many sessions is perhaps a more interesting question ... */ 371 372#define MAX_SESS_ID_ATTEMPTS 10 373static int def_generate_session_id(const SSL *ssl, unsigned char *id, 374 unsigned int *id_len) 375{ 376 unsigned int retry = 0; 377 do 378 if (RAND_pseudo_bytes(id, *id_len) <= 0) 379 return 0; 380 while(SSL_has_matching_session_id(ssl, id, *id_len) && 381 (++retry < MAX_SESS_ID_ATTEMPTS)); 382 if(retry < MAX_SESS_ID_ATTEMPTS) 383 return 1; 384 /* else - woops a session_id match */ 385 /* XXX We should also check the external cache -- 386 * but the probability of a collision is negligible, and 387 * we could not prevent the concurrent creation of sessions 388 * with identical IDs since we currently don't have means 389 * to atomically check whether a session ID already exists 390 * and make a reservation for it if it does not 391 * (this problem applies to the internal cache as well). 392 */ 393 return 0; 394} 395 396int ssl_get_new_session(SSL *s, int session) 397 { 398 /* This gets used by clients and servers. */ 399 400 unsigned int tmp; 401 SSL_SESSION *ss=NULL; 402 GEN_SESSION_CB cb = def_generate_session_id; 403 404 if ((ss=SSL_SESSION_new()) == NULL) return(0); 405 406 /* If the context has a default timeout, use it */ 407 if (s->session_ctx->session_timeout == 0) 408 ss->timeout=SSL_get_default_timeout(s); 409 else 410 ss->timeout=s->session_ctx->session_timeout; 411 412 if (s->session != NULL) 413 { 414 SSL_SESSION_free(s->session); 415 s->session=NULL; 416 } 417 418 if (session) 419 { 420 if (s->version == SSL2_VERSION) 421 { 422 ss->ssl_version=SSL2_VERSION; 423 ss->session_id_length=SSL2_SSL_SESSION_ID_LENGTH; 424 } 425 else if (s->version == SSL3_VERSION) 426 { 427 ss->ssl_version=SSL3_VERSION; 428 ss->session_id_length=SSL3_SSL_SESSION_ID_LENGTH; 429 } 430 else if (s->version == TLS1_VERSION) 431 { 432 ss->ssl_version=TLS1_VERSION; 433 ss->session_id_length=SSL3_SSL_SESSION_ID_LENGTH; 434 } 435 else if (s->version == TLS1_1_VERSION) 436 { 437 ss->ssl_version=TLS1_1_VERSION; 438 ss->session_id_length=SSL3_SSL_SESSION_ID_LENGTH; 439 } 440 else if (s->version == TLS1_2_VERSION) 441 { 442 ss->ssl_version=TLS1_2_VERSION; 443 ss->session_id_length=SSL3_SSL_SESSION_ID_LENGTH; 444 } 445 else if (s->version == DTLS1_BAD_VER) 446 { 447 ss->ssl_version=DTLS1_BAD_VER; 448 ss->session_id_length=SSL3_SSL_SESSION_ID_LENGTH; 449 } 450 else if (s->version == DTLS1_VERSION) 451 { 452 ss->ssl_version=DTLS1_VERSION; 453 ss->session_id_length=SSL3_SSL_SESSION_ID_LENGTH; 454 } 455 else 456 { 457 SSLerr(SSL_F_SSL_GET_NEW_SESSION,SSL_R_UNSUPPORTED_SSL_VERSION); 458 SSL_SESSION_free(ss); 459 return(0); 460 } 461#ifndef OPENSSL_NO_TLSEXT 462 /* 463 * If RFC5077 ticket, use empty session ID (as server). 464 * Note that: 465 * (a) ssl_get_prev_session() does lookahead into the 466 * ClientHello extensions to find the session ticket. 467 * When ssl_get_prev_session() fails, s3_srvr.c calls 468 * ssl_get_new_session() in ssl3_get_client_hello(). 469 * At that point, it has not yet parsed the extensions, 470 * however, because of the lookahead, it already knows 471 * whether a ticket is expected or not. 472 * 473 * (b) s3_clnt.c calls ssl_get_new_session() before parsing 474 * ServerHello extensions, and before recording the session 475 * ID received from the server, so this block is a noop. 476 */ 477 if (s->tlsext_ticket_expected) 478 { 479 ss->session_id_length = 0; 480 goto sess_id_done; 481 } 482#endif 483 /* Choose which callback will set the session ID */ 484 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 485 if(s->generate_session_id) 486 cb = s->generate_session_id; 487 else if(s->session_ctx->generate_session_id) 488 cb = s->session_ctx->generate_session_id; 489 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 490 /* Choose a session ID */ 491 tmp = ss->session_id_length; 492 if(!cb(s, ss->session_id, &tmp)) 493 { 494 /* The callback failed */ 495 SSLerr(SSL_F_SSL_GET_NEW_SESSION, 496 SSL_R_SSL_SESSION_ID_CALLBACK_FAILED); 497 SSL_SESSION_free(ss); 498 return(0); 499 } 500 /* Don't allow the callback to set the session length to zero. 501 * nor set it higher than it was. */ 502 if(!tmp || (tmp > ss->session_id_length)) 503 { 504 /* The callback set an illegal length */ 505 SSLerr(SSL_F_SSL_GET_NEW_SESSION, 506 SSL_R_SSL_SESSION_ID_HAS_BAD_LENGTH); 507 SSL_SESSION_free(ss); 508 return(0); 509 } 510 /* If the session length was shrunk and we're SSLv2, pad it */ 511 if((tmp < ss->session_id_length) && (s->version == SSL2_VERSION)) 512 memset(ss->session_id + tmp, 0, ss->session_id_length - tmp); 513 else 514 ss->session_id_length = tmp; 515 /* Finally, check for a conflict */ 516 if(SSL_has_matching_session_id(s, ss->session_id, 517 ss->session_id_length)) 518 { 519 SSLerr(SSL_F_SSL_GET_NEW_SESSION, 520 SSL_R_SSL_SESSION_ID_CONFLICT); 521 SSL_SESSION_free(ss); 522 return(0); 523 } 524#ifndef OPENSSL_NO_TLSEXT 525 sess_id_done: 526 if (s->tlsext_hostname) { 527 ss->tlsext_hostname = BUF_strdup(s->tlsext_hostname); 528 if (ss->tlsext_hostname == NULL) { 529 SSLerr(SSL_F_SSL_GET_NEW_SESSION, ERR_R_INTERNAL_ERROR); 530 SSL_SESSION_free(ss); 531 return 0; 532 } 533 } 534#ifndef OPENSSL_NO_EC 535 if (s->tlsext_ecpointformatlist) 536 { 537 if (ss->tlsext_ecpointformatlist != NULL) OPENSSL_free(ss->tlsext_ecpointformatlist); 538 if ((ss->tlsext_ecpointformatlist = OPENSSL_malloc(s->tlsext_ecpointformatlist_length)) == NULL) 539 { 540 SSLerr(SSL_F_SSL_GET_NEW_SESSION, ERR_R_MALLOC_FAILURE); 541 SSL_SESSION_free(ss); 542 return 0; 543 } 544 ss->tlsext_ecpointformatlist_length = s->tlsext_ecpointformatlist_length; 545 memcpy(ss->tlsext_ecpointformatlist, s->tlsext_ecpointformatlist, s->tlsext_ecpointformatlist_length); 546 } 547 if (s->tlsext_ellipticcurvelist) 548 { 549 if (ss->tlsext_ellipticcurvelist != NULL) OPENSSL_free(ss->tlsext_ellipticcurvelist); 550 if ((ss->tlsext_ellipticcurvelist = OPENSSL_malloc(s->tlsext_ellipticcurvelist_length)) == NULL) 551 { 552 SSLerr(SSL_F_SSL_GET_NEW_SESSION, ERR_R_MALLOC_FAILURE); 553 SSL_SESSION_free(ss); 554 return 0; 555 } 556 ss->tlsext_ellipticcurvelist_length = s->tlsext_ellipticcurvelist_length; 557 memcpy(ss->tlsext_ellipticcurvelist, s->tlsext_ellipticcurvelist, s->tlsext_ellipticcurvelist_length); 558 } 559#endif 560#endif 561 } 562 else 563 { 564 ss->session_id_length=0; 565 } 566 567 if (s->sid_ctx_length > sizeof ss->sid_ctx) 568 { 569 SSLerr(SSL_F_SSL_GET_NEW_SESSION, ERR_R_INTERNAL_ERROR); 570 SSL_SESSION_free(ss); 571 return 0; 572 } 573 memcpy(ss->sid_ctx,s->sid_ctx,s->sid_ctx_length); 574 ss->sid_ctx_length=s->sid_ctx_length; 575 s->session=ss; 576 ss->ssl_version=s->version; 577 ss->verify_result = X509_V_OK; 578 579 return(1); 580 } 581 582/* ssl_get_prev attempts to find an SSL_SESSION to be used to resume this 583 * connection. It is only called by servers. 584 * 585 * session_id: points at the session ID in the ClientHello. This code will 586 * read past the end of this in order to parse out the session ticket 587 * extension, if any. 588 * len: the length of the session ID. 589 * limit: a pointer to the first byte after the ClientHello. 590 * 591 * Returns: 592 * -1: error 593 * 0: a session may have been found. 594 * 595 * Side effects: 596 * - If a session is found then s->session is pointed at it (after freeing an 597 * existing session if need be) and s->verify_result is set from the session. 598 * - Both for new and resumed sessions, s->tlsext_ticket_expected is set to 1 599 * if the server should issue a new session ticket (to 0 otherwise). 600 */ 601int ssl_get_prev_session(SSL *s, unsigned char *session_id, int len, 602 const unsigned char *limit) 603 { 604 /* This is used only by servers. */ 605 606 SSL_SESSION *ret=NULL; 607 int fatal = 0; 608 int try_session_cache = 1; 609#ifndef OPENSSL_NO_TLSEXT 610 int r; 611#endif 612 613 if (len > SSL_MAX_SSL_SESSION_ID_LENGTH) 614 goto err; 615 616 if (len == 0) 617 try_session_cache = 0; 618 619#ifndef OPENSSL_NO_TLSEXT 620 r = tls1_process_ticket(s, session_id, len, limit, &ret); /* sets s->tlsext_ticket_expected */ 621 switch (r) 622 { 623 case -1: /* Error during processing */ 624 fatal = 1; 625 goto err; 626 case 0: /* No ticket found */ 627 case 1: /* Zero length ticket found */ 628 break; /* Ok to carry on processing session id. */ 629 case 2: /* Ticket found but not decrypted. */ 630 case 3: /* Ticket decrypted, *ret has been set. */ 631 try_session_cache = 0; 632 break; 633 default: 634 abort(); 635 } 636#endif 637 638 if (try_session_cache && 639 ret == NULL && 640 !(s->session_ctx->session_cache_mode & SSL_SESS_CACHE_NO_INTERNAL_LOOKUP)) 641 { 642 SSL_SESSION data; 643 data.ssl_version=s->version; 644 data.session_id_length=len; 645 if (len == 0) 646 return 0; 647 memcpy(data.session_id,session_id,len); 648 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 649 ret=lh_SSL_SESSION_retrieve(s->session_ctx->sessions,&data); 650 if (ret != NULL) 651 { 652 /* don't allow other threads to steal it: */ 653 CRYPTO_add(&ret->references,1,CRYPTO_LOCK_SSL_SESSION); 654 } 655 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); 656 if (ret == NULL) 657 s->session_ctx->stats.sess_miss++; 658 } 659 660 if (try_session_cache && 661 ret == NULL && 662 s->session_ctx->get_session_cb != NULL) 663 { 664 int copy=1; 665 666 if ((ret=s->session_ctx->get_session_cb(s,session_id,len,©))) 667 { 668 s->session_ctx->stats.sess_cb_hit++; 669 670 /* Increment reference count now if the session callback 671 * asks us to do so (note that if the session structures 672 * returned by the callback are shared between threads, 673 * it must handle the reference count itself [i.e. copy == 0], 674 * or things won't be thread-safe). */ 675 if (copy) 676 CRYPTO_add(&ret->references,1,CRYPTO_LOCK_SSL_SESSION); 677 678 /* Add the externally cached session to the internal 679 * cache as well if and only if we are supposed to. */ 680 if(!(s->session_ctx->session_cache_mode & SSL_SESS_CACHE_NO_INTERNAL_STORE)) 681 /* The following should not return 1, otherwise, 682 * things are very strange */ 683 SSL_CTX_add_session(s->session_ctx,ret); 684 } 685 } 686 687 if (ret == NULL) 688 goto err; 689 690 /* Now ret is non-NULL and we own one of its reference counts. */ 691 692 if (ret->sid_ctx_length != s->sid_ctx_length 693 || memcmp(ret->sid_ctx,s->sid_ctx,ret->sid_ctx_length)) 694 { 695 /* We have the session requested by the client, but we don't 696 * want to use it in this context. */ 697 goto err; /* treat like cache miss */ 698 } 699 700 if((s->verify_mode & SSL_VERIFY_PEER) && s->sid_ctx_length == 0) 701 { 702 /* We can't be sure if this session is being used out of 703 * context, which is especially important for SSL_VERIFY_PEER. 704 * The application should have used SSL[_CTX]_set_session_id_context. 705 * 706 * For this error case, we generate an error instead of treating 707 * the event like a cache miss (otherwise it would be easy for 708 * applications to effectively disable the session cache by 709 * accident without anyone noticing). 710 */ 711 712 SSLerr(SSL_F_SSL_GET_PREV_SESSION,SSL_R_SESSION_ID_CONTEXT_UNINITIALIZED); 713 fatal = 1; 714 goto err; 715 } 716 717 if (ret->cipher == NULL) 718 { 719 unsigned char buf[5],*p; 720 unsigned long l; 721 722 p=buf; 723 l=ret->cipher_id; 724 l2n(l,p); 725 if ((ret->ssl_version>>8) >= SSL3_VERSION_MAJOR) 726 ret->cipher=ssl_get_cipher_by_char(s,&(buf[2])); 727 else 728 ret->cipher=ssl_get_cipher_by_char(s,&(buf[1])); 729 if (ret->cipher == NULL) 730 goto err; 731 } 732 733 if (ret->timeout < (long)(time(NULL) - ret->time)) /* timeout */ 734 { 735 s->session_ctx->stats.sess_timeout++; 736 if (try_session_cache) 737 { 738 /* session was from the cache, so remove it */ 739 SSL_CTX_remove_session(s->session_ctx,ret); 740 } 741 goto err; 742 } 743 744 s->session_ctx->stats.sess_hit++; 745 746 if (s->session != NULL) 747 SSL_SESSION_free(s->session); 748 s->session=ret; 749 s->verify_result = s->session->verify_result; 750 return 1; 751 752 err: 753 if (ret != NULL) 754 { 755 SSL_SESSION_free(ret); 756#ifndef OPENSSL_NO_TLSEXT 757 if (!try_session_cache) 758 { 759 /* The session was from a ticket, so we should 760 * issue a ticket for the new session */ 761 s->tlsext_ticket_expected = 1; 762 } 763#endif 764 } 765 if (fatal) 766 return -1; 767 else 768 return 0; 769 } 770 771int SSL_CTX_add_session(SSL_CTX *ctx, SSL_SESSION *c) 772 { 773 int ret=0; 774 SSL_SESSION *s; 775 776 /* add just 1 reference count for the SSL_CTX's session cache 777 * even though it has two ways of access: each session is in a 778 * doubly linked list and an lhash */ 779 CRYPTO_add(&c->references,1,CRYPTO_LOCK_SSL_SESSION); 780 /* if session c is in already in cache, we take back the increment later */ 781 782 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 783 s=lh_SSL_SESSION_insert(ctx->sessions,c); 784 785 /* s != NULL iff we already had a session with the given PID. 786 * In this case, s == c should hold (then we did not really modify 787 * ctx->sessions), or we're in trouble. */ 788 if (s != NULL && s != c) 789 { 790 /* We *are* in trouble ... */ 791 SSL_SESSION_list_remove(ctx,s); 792 SSL_SESSION_free(s); 793 /* ... so pretend the other session did not exist in cache 794 * (we cannot handle two SSL_SESSION structures with identical 795 * session ID in the same cache, which could happen e.g. when 796 * two threads concurrently obtain the same session from an external 797 * cache) */ 798 s = NULL; 799 } 800 801 /* Put at the head of the queue unless it is already in the cache */ 802 if (s == NULL) 803 SSL_SESSION_list_add(ctx,c); 804 805 if (s != NULL) 806 { 807 /* existing cache entry -- decrement previously incremented reference 808 * count because it already takes into account the cache */ 809 810 SSL_SESSION_free(s); /* s == c */ 811 ret=0; 812 } 813 else 814 { 815 /* new cache entry -- remove old ones if cache has become too large */ 816 817 ret=1; 818 819 if (SSL_CTX_sess_get_cache_size(ctx) > 0) 820 { 821 while (SSL_CTX_sess_number(ctx) > 822 SSL_CTX_sess_get_cache_size(ctx)) 823 { 824 if (!remove_session_lock(ctx, 825 ctx->session_cache_tail, 0)) 826 break; 827 else 828 ctx->stats.sess_cache_full++; 829 } 830 } 831 } 832 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 833 return(ret); 834 } 835 836int SSL_CTX_remove_session(SSL_CTX *ctx, SSL_SESSION *c) 837{ 838 return remove_session_lock(ctx, c, 1); 839} 840 841static int remove_session_lock(SSL_CTX *ctx, SSL_SESSION *c, int lck) 842 { 843 SSL_SESSION *r; 844 int ret=0; 845 846 if ((c != NULL) && (c->session_id_length != 0)) 847 { 848 if(lck) CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 849 if ((r = lh_SSL_SESSION_retrieve(ctx->sessions,c)) == c) 850 { 851 ret=1; 852 r=lh_SSL_SESSION_delete(ctx->sessions,c); 853 SSL_SESSION_list_remove(ctx,c); 854 } 855 856 if(lck) CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 857 858 if (ret) 859 { 860 r->not_resumable=1; 861 if (ctx->remove_session_cb != NULL) 862 ctx->remove_session_cb(ctx,r); 863 SSL_SESSION_free(r); 864 } 865 } 866 else 867 ret=0; 868 return(ret); 869 } 870 871void SSL_SESSION_free(SSL_SESSION *ss) 872 { 873 int i; 874 875 if(ss == NULL) 876 return; 877 878 i=CRYPTO_add(&ss->references,-1,CRYPTO_LOCK_SSL_SESSION); 879#ifdef REF_PRINT 880 REF_PRINT("SSL_SESSION",ss); 881#endif 882 if (i > 0) return; 883#ifdef REF_CHECK 884 if (i < 0) 885 { 886 fprintf(stderr,"SSL_SESSION_free, bad reference count\n"); 887 abort(); /* ok */ 888 } 889#endif 890 891 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_SESSION, ss, &ss->ex_data); 892 893 OPENSSL_cleanse(ss->key_arg,sizeof ss->key_arg); 894 OPENSSL_cleanse(ss->master_key,sizeof ss->master_key); 895 OPENSSL_cleanse(ss->session_id,sizeof ss->session_id); 896 if (ss->sess_cert != NULL) ssl_sess_cert_free(ss->sess_cert); 897 if (ss->peer != NULL) X509_free(ss->peer); 898 if (ss->ciphers != NULL) sk_SSL_CIPHER_free(ss->ciphers); 899#ifndef OPENSSL_NO_TLSEXT 900 if (ss->tlsext_hostname != NULL) OPENSSL_free(ss->tlsext_hostname); 901 if (ss->tlsext_tick != NULL) OPENSSL_free(ss->tlsext_tick); 902#ifndef OPENSSL_NO_EC 903 ss->tlsext_ecpointformatlist_length = 0; 904 if (ss->tlsext_ecpointformatlist != NULL) OPENSSL_free(ss->tlsext_ecpointformatlist); 905 ss->tlsext_ellipticcurvelist_length = 0; 906 if (ss->tlsext_ellipticcurvelist != NULL) OPENSSL_free(ss->tlsext_ellipticcurvelist); 907#endif /* OPENSSL_NO_EC */ 908#endif 909#ifndef OPENSSL_NO_PSK 910 if (ss->psk_identity_hint != NULL) 911 OPENSSL_free(ss->psk_identity_hint); 912 if (ss->psk_identity != NULL) 913 OPENSSL_free(ss->psk_identity); 914#endif 915#ifndef OPENSSL_NO_SRP 916 if (ss->srp_username != NULL) 917 OPENSSL_free(ss->srp_username); 918#endif 919 OPENSSL_cleanse(ss,sizeof(*ss)); 920 OPENSSL_free(ss); 921 } 922 923int SSL_set_session(SSL *s, SSL_SESSION *session) 924 { 925 int ret=0; 926 const SSL_METHOD *meth; 927 928 if (session != NULL) 929 { 930 meth=s->ctx->method->get_ssl_method(session->ssl_version); 931 if (meth == NULL) 932 meth=s->method->get_ssl_method(session->ssl_version); 933 if (meth == NULL) 934 { 935 SSLerr(SSL_F_SSL_SET_SESSION,SSL_R_UNABLE_TO_FIND_SSL_METHOD); 936 return(0); 937 } 938 939 if (meth != s->method) 940 { 941 if (!SSL_set_ssl_method(s,meth)) 942 return(0); 943 } 944 945#ifndef OPENSSL_NO_KRB5 946 if (s->kssl_ctx && !s->kssl_ctx->client_princ && 947 session->krb5_client_princ_len > 0) 948 { 949 s->kssl_ctx->client_princ = (char *)OPENSSL_malloc(session->krb5_client_princ_len + 1); 950 memcpy(s->kssl_ctx->client_princ,session->krb5_client_princ, 951 session->krb5_client_princ_len); 952 s->kssl_ctx->client_princ[session->krb5_client_princ_len] = '\0'; 953 } 954#endif /* OPENSSL_NO_KRB5 */ 955 956 /* CRYPTO_w_lock(CRYPTO_LOCK_SSL);*/ 957 CRYPTO_add(&session->references,1,CRYPTO_LOCK_SSL_SESSION); 958 if (s->session != NULL) 959 SSL_SESSION_free(s->session); 960 s->session=session; 961 s->verify_result = s->session->verify_result; 962 /* CRYPTO_w_unlock(CRYPTO_LOCK_SSL);*/ 963 ret=1; 964 } 965 else 966 { 967 if (s->session != NULL) 968 { 969 SSL_SESSION_free(s->session); 970 s->session=NULL; 971 } 972 973 meth=s->ctx->method; 974 if (meth != s->method) 975 { 976 if (!SSL_set_ssl_method(s,meth)) 977 return(0); 978 } 979 ret=1; 980 } 981 return(ret); 982 } 983 984long SSL_SESSION_set_timeout(SSL_SESSION *s, long t) 985 { 986 if (s == NULL) return(0); 987 s->timeout=t; 988 return(1); 989 } 990 991long SSL_SESSION_get_timeout(const SSL_SESSION *s) 992 { 993 if (s == NULL) return(0); 994 return(s->timeout); 995 } 996 997long SSL_SESSION_get_time(const SSL_SESSION *s) 998 { 999 if (s == NULL) return(0); 1000 return(s->time); 1001 } 1002 1003long SSL_SESSION_set_time(SSL_SESSION *s, long t) 1004 { 1005 if (s == NULL) return(0); 1006 s->time=t; 1007 return(t); 1008 } 1009 1010X509 *SSL_SESSION_get0_peer(SSL_SESSION *s) 1011 { 1012 return s->peer; 1013 } 1014 1015int SSL_SESSION_set1_id_context(SSL_SESSION *s,const unsigned char *sid_ctx, 1016 unsigned int sid_ctx_len) 1017 { 1018 if(sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) 1019 { 1020 SSLerr(SSL_F_SSL_SESSION_SET1_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); 1021 return 0; 1022 } 1023 s->sid_ctx_length=sid_ctx_len; 1024 memcpy(s->sid_ctx,sid_ctx,sid_ctx_len); 1025 1026 return 1; 1027 } 1028 1029long SSL_CTX_set_timeout(SSL_CTX *s, long t) 1030 { 1031 long l; 1032 if (s == NULL) return(0); 1033 l=s->session_timeout; 1034 s->session_timeout=t; 1035 return(l); 1036 } 1037 1038long SSL_CTX_get_timeout(const SSL_CTX *s) 1039 { 1040 if (s == NULL) return(0); 1041 return(s->session_timeout); 1042 } 1043 1044#ifndef OPENSSL_NO_TLSEXT 1045int SSL_set_session_secret_cb(SSL *s, int (*tls_session_secret_cb)(SSL *s, void *secret, int *secret_len, 1046 STACK_OF(SSL_CIPHER) *peer_ciphers, SSL_CIPHER **cipher, void *arg), void *arg) 1047 { 1048 if (s == NULL) return(0); 1049 s->tls_session_secret_cb = tls_session_secret_cb; 1050 s->tls_session_secret_cb_arg = arg; 1051 return(1); 1052 } 1053 1054int SSL_set_session_ticket_ext_cb(SSL *s, tls_session_ticket_ext_cb_fn cb, 1055 void *arg) 1056 { 1057 if (s == NULL) return(0); 1058 s->tls_session_ticket_ext_cb = cb; 1059 s->tls_session_ticket_ext_cb_arg = arg; 1060 return(1); 1061 } 1062 1063int SSL_set_session_ticket_ext(SSL *s, void *ext_data, int ext_len) 1064 { 1065 if (s->version >= TLS1_VERSION) 1066 { 1067 if (s->tlsext_session_ticket) 1068 { 1069 OPENSSL_free(s->tlsext_session_ticket); 1070 s->tlsext_session_ticket = NULL; 1071 } 1072 1073 s->tlsext_session_ticket = OPENSSL_malloc(sizeof(TLS_SESSION_TICKET_EXT) + ext_len); 1074 if (!s->tlsext_session_ticket) 1075 { 1076 SSLerr(SSL_F_SSL_SET_SESSION_TICKET_EXT, ERR_R_MALLOC_FAILURE); 1077 return 0; 1078 } 1079 1080 if (ext_data) 1081 { 1082 s->tlsext_session_ticket->length = ext_len; 1083 s->tlsext_session_ticket->data = s->tlsext_session_ticket + 1; 1084 memcpy(s->tlsext_session_ticket->data, ext_data, ext_len); 1085 } 1086 else 1087 { 1088 s->tlsext_session_ticket->length = 0; 1089 s->tlsext_session_ticket->data = NULL; 1090 } 1091 1092 return 1; 1093 } 1094 1095 return 0; 1096 } 1097#endif /* OPENSSL_NO_TLSEXT */ 1098 1099typedef struct timeout_param_st 1100 { 1101 SSL_CTX *ctx; 1102 long time; 1103 LHASH_OF(SSL_SESSION) *cache; 1104 } TIMEOUT_PARAM; 1105 1106static void timeout_doall_arg(SSL_SESSION *s, TIMEOUT_PARAM *p) 1107 { 1108 if ((p->time == 0) || (p->time > (s->time+s->timeout))) /* timeout */ 1109 { 1110 /* The reason we don't call SSL_CTX_remove_session() is to 1111 * save on locking overhead */ 1112 (void)lh_SSL_SESSION_delete(p->cache,s); 1113 SSL_SESSION_list_remove(p->ctx,s); 1114 s->not_resumable=1; 1115 if (p->ctx->remove_session_cb != NULL) 1116 p->ctx->remove_session_cb(p->ctx,s); 1117 SSL_SESSION_free(s); 1118 } 1119 } 1120 1121static IMPLEMENT_LHASH_DOALL_ARG_FN(timeout, SSL_SESSION, TIMEOUT_PARAM) 1122 1123void SSL_CTX_flush_sessions(SSL_CTX *s, long t) 1124 { 1125 unsigned long i; 1126 TIMEOUT_PARAM tp; 1127 1128 tp.ctx=s; 1129 tp.cache=s->sessions; 1130 if (tp.cache == NULL) return; 1131 tp.time=t; 1132 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); 1133 i=CHECKED_LHASH_OF(SSL_SESSION, tp.cache)->down_load; 1134 CHECKED_LHASH_OF(SSL_SESSION, tp.cache)->down_load=0; 1135 lh_SSL_SESSION_doall_arg(tp.cache, LHASH_DOALL_ARG_FN(timeout), 1136 TIMEOUT_PARAM, &tp); 1137 CHECKED_LHASH_OF(SSL_SESSION, tp.cache)->down_load=i; 1138 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); 1139 } 1140 1141int ssl_clear_bad_session(SSL *s) 1142 { 1143 if ( (s->session != NULL) && 1144 !(s->shutdown & SSL_SENT_SHUTDOWN) && 1145 !(SSL_in_init(s) || SSL_in_before(s))) 1146 { 1147 SSL_CTX_remove_session(s->ctx,s->session); 1148 return(1); 1149 } 1150 else 1151 return(0); 1152 } 1153 1154/* locked by SSL_CTX in the calling function */ 1155static void SSL_SESSION_list_remove(SSL_CTX *ctx, SSL_SESSION *s) 1156 { 1157 if ((s->next == NULL) || (s->prev == NULL)) return; 1158 1159 if (s->next == (SSL_SESSION *)&(ctx->session_cache_tail)) 1160 { /* last element in list */ 1161 if (s->prev == (SSL_SESSION *)&(ctx->session_cache_head)) 1162 { /* only one element in list */ 1163 ctx->session_cache_head=NULL; 1164 ctx->session_cache_tail=NULL; 1165 } 1166 else 1167 { 1168 ctx->session_cache_tail=s->prev; 1169 s->prev->next=(SSL_SESSION *)&(ctx->session_cache_tail); 1170 } 1171 } 1172 else 1173 { 1174 if (s->prev == (SSL_SESSION *)&(ctx->session_cache_head)) 1175 { /* first element in list */ 1176 ctx->session_cache_head=s->next; 1177 s->next->prev=(SSL_SESSION *)&(ctx->session_cache_head); 1178 } 1179 else 1180 { /* middle of list */ 1181 s->next->prev=s->prev; 1182 s->prev->next=s->next; 1183 } 1184 } 1185 s->prev=s->next=NULL; 1186 } 1187 1188static void SSL_SESSION_list_add(SSL_CTX *ctx, SSL_SESSION *s) 1189 { 1190 if ((s->next != NULL) && (s->prev != NULL)) 1191 SSL_SESSION_list_remove(ctx,s); 1192 1193 if (ctx->session_cache_head == NULL) 1194 { 1195 ctx->session_cache_head=s; 1196 ctx->session_cache_tail=s; 1197 s->prev=(SSL_SESSION *)&(ctx->session_cache_head); 1198 s->next=(SSL_SESSION *)&(ctx->session_cache_tail); 1199 } 1200 else 1201 { 1202 s->next=ctx->session_cache_head; 1203 s->next->prev=s; 1204 s->prev=(SSL_SESSION *)&(ctx->session_cache_head); 1205 ctx->session_cache_head=s; 1206 } 1207 } 1208 1209void SSL_CTX_sess_set_new_cb(SSL_CTX *ctx, 1210 int (*cb)(struct ssl_st *ssl,SSL_SESSION *sess)) 1211 { 1212 ctx->new_session_cb=cb; 1213 } 1214 1215int (*SSL_CTX_sess_get_new_cb(SSL_CTX *ctx))(SSL *ssl, SSL_SESSION *sess) 1216 { 1217 return ctx->new_session_cb; 1218 } 1219 1220void SSL_CTX_sess_set_remove_cb(SSL_CTX *ctx, 1221 void (*cb)(SSL_CTX *ctx,SSL_SESSION *sess)) 1222 { 1223 ctx->remove_session_cb=cb; 1224 } 1225 1226void (*SSL_CTX_sess_get_remove_cb(SSL_CTX *ctx))(SSL_CTX * ctx,SSL_SESSION *sess) 1227 { 1228 return ctx->remove_session_cb; 1229 } 1230 1231void SSL_CTX_sess_set_get_cb(SSL_CTX *ctx, 1232 SSL_SESSION *(*cb)(struct ssl_st *ssl, 1233 unsigned char *data,int len,int *copy)) 1234 { 1235 ctx->get_session_cb=cb; 1236 } 1237 1238SSL_SESSION * (*SSL_CTX_sess_get_get_cb(SSL_CTX *ctx))(SSL *ssl, 1239 unsigned char *data,int len,int *copy) 1240 { 1241 return ctx->get_session_cb; 1242 } 1243 1244void SSL_CTX_set_info_callback(SSL_CTX *ctx, 1245 void (*cb)(const SSL *ssl,int type,int val)) 1246 { 1247 ctx->info_callback=cb; 1248 } 1249 1250void (*SSL_CTX_get_info_callback(SSL_CTX *ctx))(const SSL *ssl,int type,int val) 1251 { 1252 return ctx->info_callback; 1253 } 1254 1255void SSL_CTX_set_client_cert_cb(SSL_CTX *ctx, 1256 int (*cb)(SSL *ssl, X509 **x509, EVP_PKEY **pkey)) 1257 { 1258 ctx->client_cert_cb=cb; 1259 } 1260 1261int (*SSL_CTX_get_client_cert_cb(SSL_CTX *ctx))(SSL * ssl, X509 ** x509 , EVP_PKEY **pkey) 1262 { 1263 return ctx->client_cert_cb; 1264 } 1265 1266#ifndef OPENSSL_NO_ENGINE 1267int SSL_CTX_set_client_cert_engine(SSL_CTX *ctx, ENGINE *e) 1268 { 1269 if (!ENGINE_init(e)) 1270 { 1271 SSLerr(SSL_F_SSL_CTX_SET_CLIENT_CERT_ENGINE, ERR_R_ENGINE_LIB); 1272 return 0; 1273 } 1274 if(!ENGINE_get_ssl_client_cert_function(e)) 1275 { 1276 SSLerr(SSL_F_SSL_CTX_SET_CLIENT_CERT_ENGINE, SSL_R_NO_CLIENT_CERT_METHOD); 1277 ENGINE_finish(e); 1278 return 0; 1279 } 1280 ctx->client_cert_engine = e; 1281 return 1; 1282 } 1283#endif 1284 1285void SSL_CTX_set_cookie_generate_cb(SSL_CTX *ctx, 1286 int (*cb)(SSL *ssl, unsigned char *cookie, unsigned int *cookie_len)) 1287 { 1288 ctx->app_gen_cookie_cb=cb; 1289 } 1290 1291void SSL_CTX_set_cookie_verify_cb(SSL_CTX *ctx, 1292 int (*cb)(SSL *ssl, unsigned char *cookie, unsigned int cookie_len)) 1293 { 1294 ctx->app_verify_cookie_cb=cb; 1295 } 1296 1297IMPLEMENT_PEM_rw(SSL_SESSION, SSL_SESSION, PEM_STRING_SSL_SESSION, SSL_SESSION) 1298